Brake line question

[Frozen1010]

I am working on redoing my brake lines, and I want to make sure I hook them up correctly at the master cylinder. The PO stated that the brakes were "soft" the last time he used them, and thought they needed to be bled because he recently has work done on them. When I tried them before I purchased the 'burb, the lines blew out about the middle of the truck. Looking underneath they were rusted bad, but it has looked as if portions were replaced at some point. So any way I decided to just replace them all. I got a replacement kit form LMC truck, supposedly pre bent, well the are mostly correct, but I have to do some adjusting. I have started with the front, and I am now wondering if they were correctly hooked up at the master cylinder. In the photos below the line still connected goes to the rear brakes. Is this correct? The fronts were connected to the bottom right port on what I believe is the proportioning valve.